Management of jointing and booting stage of Rice
Management of jointing and booting stage
In the field, 50% of the main tillers lengthened by 1ml / 2cm, and the main tillers were at the jointing stage when the shape of the main tillers changed to the garden. 50% of the flag leaves are at booting stage when they are all exposed to the leaf sheath. This period is the time when rice needs the most water in its life, such as dry water for a long time, which will affect the formation of panicles, with small spikes and more empty chaff. However, it can not be flooded in deep water, but should be irrigated frequently in shallow water, properly open fields, promote root growth, achieve deep roots and luxuriant leaves, and increase the number of ears and grains.
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Rice white-backed planthopper
Host rice, English white, corn, barley, wheat, sugarcane, sorghum, barnyard grass, Kentucky bluegrass and so on. The damage characteristics are the same as those of brown planthopper. Morphological characteristics the long-winged male is 3. 2-3.8mm long, light yellow with black and brown spots. Protrusion of the top of the head, forechest, middle chest dorsal plate lateral ridge external compound eye with 1 crescent dark brown spot, middle chest dorsal plate side area dark brown, middle yellow longitudinal band, front wing translucent, end brown halo spot; wing disease, face, chest, abdomen ventral dark brown. The long-winged female has a body length of 4mur4.
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How to Sprinkle Compound Fertilizer at Rice Jointing Stage
In the jointing stage of rice, we usually need to apply fertilizer for 1~2 times. In previous years, we used urea. This year, we changed to fertilizer granulated by high tower. This is a compound fertilizer with high nitrogen content and low phosphorus and potassium content. The fertilizer particles are round in shape, with holes in them and light in proportion. Before fertilizing, we first discharged flooding water, then scattered compound fertilizer particles on the soil surface, and then released water back to the field. After the water layer is full, we find that some fertilizer particles appear on the water surface. These floating fertilizer particles are blown to one side with the wind, and some stay in the corner where the wind is weak.
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